check_performance: Only compile with $THREAD_FLAG when test is marked to require it.
* scripts/check_performance: Only compile with $THREAD_FLAG
when test is marked to require it. Allow multiple
compilations/executions of marked tests.
* testsuite/testsuite_performance.h (report_performance):
Report dynamic thread support status.
(report_header): Likewise.
* testsuite/performance/allocator.cc: Stabilize iteration
count. Support more allocators. Mark each allocator test to
run and report independently.
* testsuite/performance/allocator_map_thread.cc: Likewise.
* testsuite/performance/allocator_thread.cc: Likewise.
From-SVN: r76932